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Position: Home > Articles > Simultaneous Removal of Diesel NO_x and Soot over La_2Cu_(1-x)FexO_4 Perovskite-type Catalysts Transactions of the Chinese Society for Agricultural Machinery 2012,43 (9) 11-15

La_2Cu_(1-x)FexO_4催化去除柴油机NO_x和PM排放台架试验

作  者:
陈朝辉;李志军;高立波;焦鹏昊;张文斐
单  位:
天津大学内燃机燃烧学国家重点实验室;天津大学内燃机燃烧学国家重点实验室昆明理工大学应用技术学院;天津大学
关键词:
柴油机;类钙钛矿;催化剂;活性;排放;台架试验
摘  要:
为采取后处理技术同时去除柴油机的NOx和PM排放,采用溶胶凝胶法制备了La2Cu1-xFexO4系列催化剂,运用XRD、NO-TPD及H2-TPR对样品进行表征,并对催化剂进行模拟活性评价,结果表明La2Cu0.7Fe0.3O4具有同时去除PM-NO的反应活性。将La2Cu0.7Fe0.3O4制备成催化器进行发动机稳态工况的台架试验,并采取后喷的燃油喷射方式,表明制备的催化剂在发动机高速高负荷工况时能去除NOx和氧化再生PM,当主喷与后喷间隔角为70°CA时后喷燃油能生成大量具有还原性的HC,提高了对NOx的转化率。
译  名:
Simultaneous Removal of Diesel NO_x and Soot over La_2Cu_(1-x)FexO_4 Perovskite-type Catalysts
作  者:
Chen Zhaohui1,2 Li Zhijun1 Gao Libo1 Jiao Penghao1 Zhang Wenfei1 Liu Lei1(1.State Key Laboratory of Engines,Tianjin University,Tianjin 300072,China 2.City College,Kunming University of Science and Technology,Kunming 650051,China)
关键词:
Diesel,Perovskite-type oxides,Catalysts,Activity,Emission,Bench test
摘  要:
A series of La2Cu1-xFexO4 catalysts were prepared by sol-gel,the samples were characterized by XRD、NO-TPD and H2-TPR,temperature-programmed test was used to evaluate the activity of the catalyst.It is found that La2Cu0.7Fe0.3O4 has a good PM-NO removal activities.So CDPF was prepared by La2Cu0.7Fe0.3O4 for the steady-state condition of the engine bench research,and by adjusting ECU to control fuel injection.When the crank angle between main injection and post injection was 70°CA,there was so much HC emission to significantly increase the conversion rate of NOx.

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